Side wall structure and car body, rail vehicle

Abstract

The present invention provides a side wall structure, a vehicle body, and a rail vehicle. The side wall structure includes: an upper side beam arranged along the vehicle length direction, and the lower portion of the upper side beam constitutes a door area and a plurality of window areas; a door upper cross beam assembly is fixedly connected to the top of the door area and is connected to the upper side beam; wherein the door upper cross beam assembly is fixedly connected to the upper side beam to form a U-shaped cavity structure, and the door upper cross beam assembly includes a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam. Based on mechanical topological analysis, the side wall structure can locally thicken the upper side beam at the top of the door area using the door upper cross beam assembly, thereby improving the structural strength of the door area; further, by setting the door upper cross beam assembly into a U-shaped cavity structure and adding support frames in the cavity structure, the structural strength and reliability in the vehicle width direction are further improved, and the weight increase of the side wall structure is within a controllable range, so that the side wall structure achieves a balance between meeting strength and reliability and meeting lightweight requirements.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation and provides a side wall structure and a vehicle body, and an urban virtual rail vehicle. Background Art

[0002] With the continuous development of my country's rail lines, virtual rail trains, as a new type of vehicle, have been widely used and promoted in urban rail transit to improve the rail transit network. The current high-efficiency transportation system places new demands on the safety design of virtual rail trains. The use of profiled bodywork can effectively improve the safety factor of vehicles. As a key component of the entire vehicle system, the side wall structure is particularly important in terms of safety, reliability, and lightweight design.

[0003] The sidewall structures of existing virtual rail trains include welded structures combining beams, columns, and skin profiles, or large-section aluminum profiles welded together. Other structures utilize profiles formed by integrally extruded panels. The former ensures vehicle strength while providing passengers with a spacious interior space. However, this traditional sidewall structure is too heavy to meet the overall lightweight requirements of the vehicle. While the latter improves the overall assembly accuracy of the sidewalls and makes it easier to meet vehicle lightweight requirements, the profiles are not universal, making it difficult to maintain, repair, or replace local locations after the vehicle is in operation. Furthermore, in these sidewall structures, stress concentration is prone to occur in the door and window areas of the sidewalls, as well as at the critical connections between the panels and the columns. This makes it more likely that insufficient strength will occur, making it more difficult to strike a balance between strength reliability and lightweight requirements. Summary of the Invention

[0004] The present invention provides a side wall structure, a vehicle body, and an urban virtual rail vehicle, which are used to solve the defect in related technologies that the side wall structure is more difficult to achieve a balance between meeting the strength and reliability requirements and meeting the lightweight requirements, so as to achieve that the side wall structure meets the strength and reliability requirements of the vehicle body on the basis of meeting the lightweight requirements of the vehicle body.

[0005] The side wall structure of the present invention comprises an upper side beam and an upper door cross beam.

[0006] The upper side beam is arranged along the vehicle length direction, and the lower part of the upper side beam constitutes a door area and a plurality of window areas.

[0007] The door upper crossbeam is fixed to the top of the door area and connected to the upper side beam.

[0008] Among them, the upper cross beam of the door is fixedly connected to the upper side beam to form a U-shaped cavity structure. The upper cross beam of the door includes several support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam.

[0009] According to a side wall structure of the present invention, the door upper cross beam comprises a main beam body and a plurality of support frames.

[0010] The main beam body is fixedly connected to the inner surface of the upper side beam, and the top and bottom of the main beam body are respectively fixedly connected to the inner surface of the upper side beam, so that the main beam body and the upper side beam are combined to form the U-shaped cavity structure with a closed cross-section.

[0011] A plurality of support frames are respectively connected to the main beam body and the inner surface of the upper side beam.

[0012] According to a side wall structure of the present invention, the main beam includes a first connecting end and a second connecting end.

[0013] The first connecting end is arranged at the top of the main beam body, the first connecting end is bent toward the upper side beam and forms a B-beam structure, and the top connecting end of the upper side beam is bent toward the main beam body and forms a B-beam structure, and the end surface of the first connecting end after being bent is abutted against and fixedly connected to the end surface of the top connecting end of the upper side beam after being bent.

[0014] The second connecting end is arranged at the bottom of the main beam body, the second connecting end is bent toward the upper side beam and forms a C-beam structure, and the end surface of the bent first connecting end abuts against and is fixedly connected to the inner surface of the bottom connecting end of the upper side beam.

[0015] According to a side wall structure of the present invention, the door upper crossbeam composition further includes a plurality of fixing holes, a plurality of stoppers and a plurality of rivet nuts.

[0016] A plurality of fixing holes are constructed on the surface of the main beam body.

[0017] A plurality of stop parts are respectively fixed on the surface of the main beam body facing the upper side beam, and each of the stop parts is fixed beside each of the fixing holes in a one-to-one correspondence.

[0018] A plurality of rivet nuts are respectively fixed on the surface of the main beam body facing the upper side beam.

[0019] According to a side wall structure of the present invention, the plurality of support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged at intervals and fixedly connected to the surface of the main beam body facing the upper side beam, and the first support frame and the second support frame are respectively arranged along the vehicle height direction.

[0020] The first support frame and the second support frame are respectively bent to form an "U" shape, and the bending directions of the first support frame and the second support frame are opposite.

[0021] Wherein, the fixing hole and the stopping portion are provided between each first supporting frame and the previous second supporting frame.

[0022] Wherein, the rivet nut is provided between each first support frame and the next second support frame.

[0023] According to a side wall structure of the present invention, the side wall structure further includes a pair of door columns, a pair of end columns, a plurality of window columns and a pair of window lower beams.

[0024] A pair of door posts are respectively arranged on both sides of the door area.

[0025] A pair of end columns are respectively arranged at both ends of the vehicle body.

[0026] A plurality of window columns are respectively arranged between the door columns and the end columns.

[0027] A pair of window lower cross beams are arranged below the upper side beams along the vehicle length direction, and each end pillar is connected to the door pillar on the corresponding side through the window lower cross beams.

[0028] Wherein, all the door pillars, window pillars and end pillars are arranged along the vehicle height direction.

[0029] The tops of all the door posts, window posts and end posts are connected to the upper side beams, and the bottoms of all the window posts are connected to the window lower cross beams on the corresponding sides.

[0030] Wherein, a reinforcement structure is installed at the connection between at least one of the door column, the window column and the end column and the window lower crossbeam.

[0031] According to a side wall structure of the present invention, the position where the door pillar is connected to the end of the window lower cross beam on the corresponding side is the first connection point.

[0032] The reinforcement structure includes a first reinforcement plate and a backing plate.

[0033] The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixed to the outer surface of the first connection.

[0034] The backing plate connects the side surface of the door pillar and the end surface of the window lower beam.

[0035] According to a side wall structure of the present invention, the position where the end of the window column and the window lower beam are connected is the second connection, and the reinforcement structure includes a first reinforcement plate, a second reinforcement plate and a pad; the first reinforcement plate is a rectangular plate, and the first reinforcement plate is fixed to the inner surface of the second connection; the second reinforcement plate is a T-shaped plate, and the second reinforcement plate is fixed to the outer surface of the second connection; the pad connects the end face of the window column and the upper surface of the window lower beam.

[0036] According to a side wall structure of the present invention, the position where the end column and the end of the window beam under the corresponding side are connected is the third connection; the reinforcement structure includes a first reinforcement plate and a pad; the first reinforcement plate is a rectangular plate, and the first reinforcement plate is fixed to the outer surface of the third connection; the pad connects the side surface of the end column and the end face of the window beam under the corresponding side.

[0037] According to a side wall structure of the present invention, the side wall structure further comprises a plurality of slide grooves, wherein the slide grooves are suitable for installing skirt boards, and the slide grooves are arranged at intervals and fixed to the lower surface of the window lower beam.

[0038] A vehicle body of the present invention includes the above-mentioned side wall structure, a roof, a plurality of decorative panels, and a plurality of skirt panels.

[0039] The side wall structure has a door installed in the door area of ​​the side wall structure, and all the window areas of the side wall structure are equipped with windows.

[0040] A roof is connected to the top of the side wall structure.

[0041] A plurality of decorative panels respectively cover and are connected to the upper side beams of the side wall structure. The tops of the vehicle doors and the tops of all the windows are provided with the decorative panels.

[0042] A plurality of skirt panels respectively cover and are connected to the bottom of each of the windows.

[0043] According to a vehicle body of the present invention, the top of the window is bonded to the outer surface of the upper side beam, and the bottom of the window is bonded to the outer surface of the window lower cross beam; the two side edges of the window are respectively bonded to the outer surface of the door pillar and the outer surface of the window pillar, or respectively bonded to the outer surface of the end pillar and the outer surface of the window pillar.

[0044] According to a vehicle body of the present invention, the vehicle roof includes an outer roof plate and an inner connecting beam, the top and bottom of the inner connecting beam are respectively fixed to the inner surface of the outer roof plate, and the inner connecting beam is configured with at least one step portion.

[0045] The roof rail includes a first mounting portion, a second mounting portion and a third mounting portion.

[0046] The first mounting portion is a U-beam structure and can be assembled with the step portion through sliding fit. The assembled first mounting portion is fixed to the step portion by welding.

[0047] The second mounting portion is integrally connected to the bottom of the first mounting portion. The outer surface of the second mounting portion is connected to the decorative plate, and the decorative plate is connected to the bottom of the outer shelf plate.

[0048] The third mounting portion is an L-shaped beam structure. The third mounting portion is integrally connected to the bottom of the second mounting portion, and the top of the window body is adhered to the outer surface of the third mounting portion.

[0049] According to a vehicle body of the present invention, the vehicle body also includes an end wall, the end wall is constructed with at least one connecting part, the end column is constructed with a fourth mounting part, the connecting part and the fourth mounting part are both B-beam structures, the fourth mounting part can be assembled with the connecting part of the end wall through sliding fit, and the assembled fourth mounting part is fixed to the connecting part by welding; the outer surface of the fourth mounting part is connected to the window body.

[0050] According to a vehicle body of the present invention, the skirt panel includes a skirt cover plate and a hinge portion, the hinge portion is configured to be a U-shaped hook, one end of the hinge portion is connected to the top end of the skirt cover plate through a rotating shaft, the other end of the hinge portion is provided with a horizontal extension section, the lower surface of the window lower cross beam of the side wall structure is connected with a slide groove, the bottom of the slide groove is provided with an opening, and the horizontal extension section is connected to the opening of the slide groove through a connecting bolt.

[0051] An urban virtual rail vehicle of the present invention includes the side wall structure described above; or includes the vehicle body described above.

[0052] The present invention provides a side wall structure, comprising an upper side beam and a door upper cross beam. The upper side beam is arranged along the length of the vehicle, and the lower portion of the upper side beam constitutes a door area and a plurality of window areas; the door upper cross beam is fixedly connected to the top of the door area and is connected to the upper side beam; wherein the door upper cross beam is fixedly connected to the upper side beam to form a U-shaped cavity structure, and the door upper cross beam comprises a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixed to the inner surface of the upper side beam. The side wall structure can locally thicken the upper side beam at the top of the door area based on mechanical topological analysis using the door upper cross beam, thereby improving the structural strength of the door area; further, by setting the door upper cross beam to a U-shaped cavity structure and adding support frames to the cavity structure, the structural strength and reliability in the vehicle width direction (i.e., the thickness direction of the upper side beam) are further improved, and the weight increase of the side wall structure is within a controllable range, so that the side wall structure achieves a balance between meeting strength and reliability and meeting lightweight requirements.

[0053] The present invention also provides a car body, comprising the side wall structure, roof, several decorative panels and several skirt panels as described above. The door area of ​​the side wall structure is equipped with car doors, and all window areas of the side wall structure are equipped with windows; the roof is connected to the top of the side wall structure; each decorative panel covers and is connected to the upper side beam of the side wall structure, and the top of the car door and the top of all windows are provided with decorative panels; each skirt panel covers and is connected to the bottom of each window. By providing the above-mentioned side wall structure, the car body has all the advantages of the above-mentioned side wall structure, and the details will not be repeated here. On this basis, the car body reliably assembles the side wall structure with the roof, decorative panels and skirt panels, so that the car body has substantial advantages such as beautiful appearance, simple structure and more reliable structural strength, and can meet the lightweight requirements of rail vehicles and the flatness requirements of the mounting surface of the car body's external contour.

[0054] The present invention further provides an urban virtual rail vehicle comprising the above-described side wall structure; or comprising the above-described vehicle body. The urban virtual rail vehicle, by at least providing the above-described side wall structure, has all the advantages of the above-described side wall structure, and the details are omitted here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0056] Figure 1 It is a schematic structural diagram of the side wall structure provided by the present invention.

[0057] Figure 2 It is a schematic rear view of the side wall structure provided by the present invention.

[0058] Figure 3 It is a schematic structural diagram of the outer surface of the door upper crossbeam provided by the present invention.

[0059] Figure 4 It is a schematic structural diagram of the inner surface of the door upper crossbeam provided by the present invention.

[0060] Figure 5 yes Figure 2 The schematic structural diagram of the AA direction is shown in FIG.

[0061] Figure 6 yes Figure 5 Schematic structural diagram of point B shown in FIG.

[0062] Figure 7 yes Figure 1Schematic structural diagram at C shown in FIG.

[0063] Figure 8 yes Figure 1 Schematic structural diagram at D shown in FIG.

[0064] Figure 9 yes Figure 2 Schematic structural diagram at E shown in FIG.

[0065] Figure 10 yes Figure 2 The schematic structural diagram of the FF direction is shown in FIG.

[0066] Figure 11 yes Figure 2 Schematic structural diagram of the GG direction is shown in FIG.

[0067] Figure 12 yes Figure 10 Schematic structural diagram of H shown in FIG.

[0068] Figure 13 yes Figure 2 MM direction schematic diagram shown in (length direction partially omitted).

[0069] Figure 14 It is a schematic structural diagram of the vehicle body provided by the present invention.

[0070] Figure 15 It is a schematic connection structure diagram of the end column, end wall and window provided by the present invention.

[0071] Figure 16 This is a schematic diagram of the connection structure between the window column and the window body provided by the present invention.

[0072] Figure 17 It is a schematic diagram of the connection structure between the door column and the window provided by the present invention.

[0073] Figure 18 It is a schematic diagram of the connection structure of the upper side rail, roof, decorative panel and window provided by the present invention.

[0074] Figure 19 It is a schematic diagram of the connection structure between the window lower beam and the window body provided by the present invention.

[0075] Figure 20 It is a schematic diagram of the connection structure of the window lower crossbeam and the skirt board provided by the present invention.

[0076] Reference numerals:

[0077] 1. Upper side beam; 11. Top connection end; 12. Bottom connection end; 2. Door pillar; 3. Window pillar; 31. Connection groove; 4. End pillar; 5. Window lower crossbeam; 51. Process hole; 6. Door upper crossbeam composition; 61. Main beam; 62. First connection end; 63. Second connection end; 64. Fixing hole; 65. Rivet nut; 66. Stopper; 67. Support frame; 7. First reinforcement plate; 8. Second reinforcement plate; 9. Pad; 10. Slide; 100. Roof; 110. Exterior shed board; 120. Inner connection beam; 130. Eaves; 200. Decorative board; 300. Sealant; 400. Window body; 500. Skirt board; 510. Hinged part; 520. Skirt cover board; 530. Connecting bolts; 600. End wall; DETAILED DESCRIPTION

[0078] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0079] The following references Figures 1 to 20 The side wall structure and vehicle body, and the urban virtual rail vehicle (abbreviated as “rail vehicle” in this embodiment of the present invention) according to the present invention are described in detail.

[0080] It should be noted that the vehicle body described in the present invention includes a first side wall and a second side wall. The first side wall and the second side wall are arranged side by side on both sides of the vehicle width relative to the vehicle length. The embodiment of the present invention uses the first side wall as an example to describe the side wall structure in detail.

[0081] It should be noted that the terms "front," "rear," and "vehicle length" as used herein refer to the length direction of the rail vehicle. The terms "thickness" and "vehicle width" as used herein refer to the width direction of the rail vehicle. The terms "up," "down," "top," "bottom," and "vehicle height" as used herein refer to the height direction of the rail vehicle. The terms "left" and "right" as used herein refer to the left-right directions as shown in the corresponding accompanying drawings.

[0082] like Figure 1 and Figure 2As shown, the side wall structure described in the embodiment of the present invention includes an upper side beam 1 and a door upper cross beam assembly 6. The upper side beam 1 is arranged along the vehicle length direction. The lower part of the upper side beam 1 constitutes a door area and several window areas. The door upper cross beam assembly 6 is fixedly connected to the top of the door area and is connected to the upper side beam 1. Based on mechanical topological analysis, the side wall structure can use the door upper cross beam assembly 6 to locally thicken the upper side beam 1 at the top of the door area, thereby improving the structural strength of the door area. Among them, the door upper cross beam assembly 6 is fixedly connected to the upper side beam 1 to form a U-shaped cavity structure, and the door upper cross beam assembly 6 includes several support frames 67, each of which is installed in the U-shaped cavity structure and fixed to the inner surface of the upper side beam 1. The side wall structure further improves the structural strength and reliability in the vehicle width direction (i.e., the thickness direction of the upper side beam 1) by setting the door upper cross beam assembly 6 into a U-shaped cavity structure and adding support frames 67 in the cavity structure. It can be seen that the side wall structure can ensure that its weight increase is within a controllable range, so that the side wall structure can achieve a better balance between meeting strength reliability and meeting lightweight requirements.

[0083] In some embodiments, as Figure 3 and Figure 4 As shown, the door upper crossbeam assembly 6 includes a main beam body 61 and a plurality of support frames 67 as described above. The main beam body 61 is fixed to the inner surface of the upper side beam 1, providing reliable support for the upper side beam 1. The top and bottom of the main beam body 61 are respectively fixed to the inner surface of the upper side beam 1, so that the main beam body 61 and the upper side beam 1 together form a U-shaped cavity structure with a closed cross section, as shown in FIG. Figure 5 and Figure 6 As shown. The U-shaped cavity structure can reinforce the thickness of the upper side beam 1 in the vehicle width direction to improve the structural strength, and because the cavity structure has a hollow inner cavity, the degree of weight gain is within a controllable range, which can meet the lightweight requirements of the vehicle body. Each support frame 67 is respectively connected to the main beam body 61 and the inner surface of the upper side beam 1, so that the support frame 67 is used to provide effective support in the thickness direction in the hollow inner cavity of the U-shaped cavity structure, ensuring the local position reinforcement support between the upper side beam 1 and the main beam body 61, further improving the structural strength, thereby ensuring the reliability of mechanical transmission above the door area and avoiding deformation of the door area. The support frame 67 can also ensure that the flatness of the door mechanism mounting surface of the vehicle door meets the requirements, thereby improving the installation accuracy and reliability of the door mechanism.

[0084] In some embodiments, as Figure 3 and Figure 4 As shown, the main beam body 61 includes a first connecting end 62 and a second connecting end 63 .

[0085] In some specific embodiments, a first connecting end 62 is disposed at the top of the main beam body 61. The first connecting end 62 is bent toward the roof rail 1 to form a B-beam structure, and the top connecting end 11 of the roof rail 1 is bent toward the main beam body 61 to form a B-beam structure. The bent end surface of the first connecting end 62 abuts and is fixed to the bent end surface of the top connecting end 11 of the roof rail 1, thereby forming the top of the closed cross-section of the aforementioned U-shaped cavity structure. This structural arrangement enables the end surface of the first connecting end 62 located at the top of the roof rail 1 and the end surface of the top connecting end 11 located at the top of the main beam body 61 to form a surface-to-surface abutment and weld fixation, increasing the connection contact area and improving the strength of the connection and support. This structure also cooperates with the connection structure between the roof rail 1 and the roof 100 described below, and does not interfere with the sliding fit between the roof rail 1 and the roof 100 during installation (the installation structure of the roof rail 1 and the roof 100 is described in detail later and will not be repeated here).

[0086] In some specific embodiments, the second connecting end 63 is provided at the bottom of the main beam body 61. The second connecting end 63 is bent toward the upper side beam 1 and forms a C-beam structure. The end surface of the first connecting end 62 after being bent abuts against and is fixed to the inner surface of the bottom connecting end 12 of the upper side beam 1, thereby forming the bottom of the closed cross-section of the above-mentioned U-shaped cavity structure. The end surface of the second connecting end 63 after being bent is welded to the bottom surface of the upper side beam 1 to form a surface-to-surface abutment fixation, thereby increasing the connection contact area and improving the strength of the connection and support.

[0087] In some embodiments, as Figure 3 and Figure 4 As shown, the door upper crossbeam component 6 also includes a number of fixing holes 64, a number of stoppers 66 and a number of rivet nuts 65. Each fixing hole 64 runs through the surface of the main beam body 61. Each fixing hole 64 is an oblong hole. Preferably, the fixing hole 64 is a special-shaped oblong hole. Each rivet nut 65 is fixedly connected to the surface of the main beam body 61 facing the upper side beam 1. The fixing holes 64 and the rivet nuts 65 are arranged on the main beam body 61 according to the position of the door mechanism connection interface, which can facilitate the integrated installation of the door mechanism installation interface of the vehicle door on the main beam body 61 and facilitate the adjustment of the installation position. Each stopper 66 is fixedly connected to the surface of the main beam body 61 facing the upper side beam 1, and each stopper 66 is fixedly connected to the side of each fixing hole 64 in a one-to-one correspondence. The stopper 66 is inside the fixing hole 64, which can form a protection and stopping effect for the bolt, ensuring that the bolt will not rotate after installation.

[0088] In some embodiments, as Figure 3 and Figure 4As shown, the above-mentioned several support frames 67 include at least a first support frame 67 and a second support frame 67. The first support frame 67 and the second support frame 67 are arranged at intervals and fixed on the surface of the main beam 61 facing the upper side beam 1, and the first support frame 67 and the second support frame 67 are respectively arranged along the vehicle height direction. The first support frame 67 and the second support frame 67 are respectively bent to form an "I" shape, and the bending directions of the first support frame 67 and the second support frame 67 are opposite. This structural setting ensures that the first support frame 67 and the second support frame 67 can both be reliably supported between the inner surface of the main beam 61 and the inner surface of the upper side beam 1, and the combination of the first support frame 67 and the second support frame 67 can support the main beam 61 from a two-way angle combination, thereby improving the flatness of the surface of the main beam 61.

[0089] In some embodiments, a fixing hole 64 and a stopper 66 are provided between each first support bracket 67 and the preceding second support bracket 67. A rivet nut 65 is provided between each first support bracket 67 and the succeeding second support bracket 67. The specific arrangement of the fixing hole 64, the stopper 66, and the rivet nut 65 can be determined based on the requirements of the door mechanism mounting structure.

[0090] In some specific embodiments, Figure 4 As shown, the inner surface of the main beam 61 described in the embodiment of the present invention is provided with two groups of support frames 67, and each group of support frames 67 is composed of a first support frame 67 and a second support frame 67. The first support frame 67 and the second support frame 67 in each group are arranged at a certain distance. Two fixing holes 64 are respectively provided through the surface of the main beam 61 on the left and right sides of each group of support frames 67. The two fixing holes 64 are arranged in parallel up and down, and a certain distance is left between the two fixing holes 64. Two stoppers 66 are respectively provided at the positions corresponding to the two fixing holes 64. Each stopper 66 is located at the position of the corresponding fixing hole 64. The length of each stopper 66 is the same as the length of the fixing hole 64. When the bolts of the door mechanism mounting interface pass through the fixing hole 64, they can be inserted into the stopper 66 to achieve the stopping and anti-rotation effects of the bolts. Two rivet nuts 65 are provided between the first support frame 67 and the second support frame 67 of each group. The two rivet nuts 65 are fixed to the surface of the main beam 61 according to the upper and lower positions, and a certain distance is left between the two rivet nuts 65.

[0091] It should be noted that to further reduce weight, the main beam 61 is also provided with a number of weight-reducing holes. The distribution of the weight-reducing holes is determined based on mechanical topological analysis to maximize weight reduction while ensuring the strength of the main beam 61. The weight-reducing holes are preferably at least one of circular holes and oblong holes.

[0092] In some embodiments, as Figure 1 and Figure 2As shown, the side wall structure also includes a pair of door pillars 2, a pair of end pillars 4, a plurality of window pillars 3 and a pair of window lower cross beams 5. A pair of door pillars 2 are respectively arranged on both sides of the door area. A pair of end pillars 4 are respectively arranged at both ends of the vehicle body, suitable for connecting the end walls 600 of the vehicle body. A plurality of window pillars 3 are respectively arranged between the door pillars 2 and the end pillars 4. A pair of window lower cross beams 5 are arranged below the upper side beam 1 along the vehicle length direction, and each end pillar 4 is connected to the door pillar 2 on the corresponding side through the window lower cross beam 5. Among them, all door pillars 2, window pillars 3 and end pillars 4 are arranged along the vehicle height direction. The tops of all door pillars 2, window pillars 3 and end pillars 4 are connected to the upper side beam 1, and the bottoms of all window pillars 3 are connected to the window lower cross beam 5 on the corresponding side. In the above-mentioned side wall structure, a pair of door columns 2 and the upper side beam 1 together form a door area; the upper side beam 1, a pair of end columns 4, a pair of window lower cross beams 5 and the door columns 2 together form two groups of window areas, and the two groups of window areas are respectively located on both sides of the door area; a number of window columns 3 further divide the two groups of window areas into a number of window areas.

[0093] The side wall structure (i.e., the side wall skeleton structure) described in this embodiment is simple in structure, and the door pillars 2, the window lower cross beams 5, and the window pillars 3 are preferably made of stainless steel square tube structures. Compared with the traditional protruding beams, the structure is simple and the rigidity is higher, which can play a sufficient supporting and force transmission role in the side wall structure; and, preferably, the upper side beam 1 is a rolled part, and a position for installing the door upper cross beam assembly is reserved in the door area to realize the reinforcement of the door area, and the top of the upper side beam 1 is suitable for connecting to the roof 100, and the bottom is suitable for connecting to the window body 400, so as to realize the maximum utilization of parts, thereby achieving an effective balance between meeting the lightweight requirements and maximizing the reliability of support strength.

[0094] It should be noted that, in the side wall structure described in the embodiment of the present invention, the allocation of the door area and the window area can be as follows: Figure 1 In the symmetrical structure shown, the door area is located in the middle of the vehicle body, that is, the middle of the lower side beam, and several window areas are arranged on both sides of the door area; other structures can also be used, for example, door areas are set at the ends of the vehicle body, and the window areas are located between the door areas.

[0095] In some embodiments, to further enhance the skeletal support and connection strength of the side wall structure, a reinforcement structure is installed at the connection between at least one of the door pillars 2, window pillars 3, and end pillars 4 and the window lower crossbeam 5. This reinforcement structure effectively prevents stress concentration at the connection between the beams and reliably controls deformation at the connection between the beams, thereby extending the service life of the side wall structure.

[0096] The reinforcement structure should be provided with different connection methods according to the specific structure of the connection between the beams in the side wall structure. In some specific embodiments, the reinforcement structure includes a reinforcement plate and a pad 9. The reinforcement plate covers and is connected to the outer surface of the connection of the beams to improve the connection reliability of the connection. Preferably, the connection plate and the beams are connected by spot welding, which can reliably control the structural deformation of the connection. The pad 9 is paved and connected to the connection end face of the beam. Arc welding is used at the locations where spot welding cannot be performed at the connection of the beams of the side wall structure. By adding the pad 9, the welding deformation can be effectively controlled.

[0097] In this embodiment of the present invention, the point where the door pillar 2 connects to the end of the window lower crossbeam 5 on the corresponding side is the first connection; the point where the end of the window pillar 3 connects to the window lower crossbeam 5 is the second connection. Based on mechanical topological analysis, it can be seen that all first and second connections in this side wall structure require additional reinforcement structures.

[0098] In some specific embodiments, the reinforcement structure at the first connection is as follows Figure 7 As shown. The reinforcement structure includes a first reinforcing plate 7 and a pad 9. The first reinforcing plate 7 is a rectangular plate, and the first reinforcing plate 7 is fixed to the outer surface of the first connection. The first reinforcing plate 7 is fixed to the end of the door column 2 and the lower window beam 5 by spot welding. The pad 9 connects the side surface of the door column 2 and the end face of the lower window beam 5, that is, the pad 9 is padded between the end face of the lower window beam 5 and the side surface of the door column 2. The pad 9 can reliably control the welding deformation between the lower window beam 5 and the door column 2, thereby improving the structural strength.

[0099] In some specific embodiments, the reinforcement structure at the second connection is as follows: Figure 8 and Figure 9 As shown. The reinforcement structure includes a first reinforcement plate 7, a second reinforcement plate 8 and a pad 9. Figure 9 As shown, the first reinforcing plate 7 is a rectangular plate. The first reinforcing plate 7 is fixed to the inner surface of the second connection. The first reinforcing plate 7 is fixed to the inner surface of the second connection by spot welding to fix the ends of the window lower crossbeam 5 and the window column 3. Preferably, the window lower crossbeam 5 on both sides of the first reinforcing plate 7 is respectively constructed with process weight reduction holes. The second reinforcing plate 8 is a T-shaped plate. The second reinforcing plate 8 is fixed to the outer surface of the second connection. The second reinforcing plate 8 is fixed to the outer surface of the second connection by spot welding to fix the ends of the window lower crossbeam 5 and the window column 3. The T-shaped plate structure increases the connection area between the second reinforcing plate 8 and the window lower crossbeam 5, further improving the connection strength of the second connection and eliminating stress. The pad 9 connects the end face of the window column 3 and the upper surface of the window lower crossbeam 5, that is, the pad 9 is installed between the end face of the bottom of the window column 3 and the upper surface of the window lower crossbeam 5. The pad 9 can reliably control the welding deformation between the window lower crossbeam 5 and the window column 3, thereby improving the structural strength.

[0100] In some specific embodiments, the reinforcement structure at the third connection is similar to the reinforcement structure at the first connection. The reinforcement structure at the third connection includes a first reinforcement plate 7 and a pad 9. The first reinforcement plate 7 is a rectangular plate, and the first reinforcement plate 7 is fixed to the outer surface of the first connection. The first reinforcement plate 7 is fixed to the end of the end column 4 and the end of the window lower beam 5 by spot welding. The pad 9 connects the side surface of the end column 4 and the end face of the window lower beam 5, that is, the pad 9 is padded between the end face of the window lower beam 5 and the side surface of the end column 4. The pad 9 can reliably control the welding deformation between the window lower beam 5 and the end column 4, thereby improving the structural strength.

[0101] In some embodiments, as Figure 10 、 Figure 11 and Figure 12 As shown, the side wall structure also includes a plurality of chutes 10. The chutes 10 are suitable for installing the skirt panels 500, and the chutes 10 are arranged at intervals and fixed to the lower surface of the lower cross beam 5 under the window. The lower surface of the lower cross beam 5 under the window is fixed with a plurality of chutes 10 at intervals along the length direction. The channel formed by each chute 10 is connected front to back along the length direction of the vehicle, and each chute 10 is preferably in a C-shaped structure, with the open end of the chute 10 facing the bottom of the vehicle, and the closed end face of the chute 10 is welded to the lower surface of the lower cross beam 5 under the window. The structural setting of the chutes 10 can facilitate the sliding installation of the equipment compartment skirt panel 500, facilitate the rapid assembly of the vehicle body and the height positioning of the skirt panel 500, reduce assembly deviation, and improve assembly efficiency.

[0102] In some specific embodiments, Figure 12 As shown, the cross beam 5 under the window is constructed with a connecting groove 31 with an opening facing downward, and the above-mentioned slide groove 10 is embedded in the connecting groove 31 to further improve the connection strength between the slide groove 10 and the cross beam under the window 5, and to increase the weight of the skirt 500 or the equipment compartment suspended by the slide groove 10, thereby increasing the load capacity of the equipment under the vehicle.

[0103] Based on the above side wall structure, such as Figure 14As shown, an embodiment of the present invention further provides a vehicle body. The vehicle body includes the side wall structure described above, a roof 100, a plurality of decorative panels 200, and a plurality of skirt panels 500. The door area of ​​the side wall structure is equipped with a vehicle door, and all window areas of the side wall structure are equipped with windows 400; the roof 100 is connected to the top of the side wall structure; each decorative panel 200 covers and is connected to the upper side beam 1 of the side wall structure, and the top of the vehicle door and the top of all windows 400 are provided with a decorative panel 200; each skirt panel 500 covers and is connected to the bottom of each window 400. By providing the above-mentioned side wall structure, the vehicle body has all the advantages of the above-mentioned side wall structure, and the details will not be repeated here. On this basis, the car body reliably assembles the side wall structure with the roof 100, the decorative panel 200 and the skirt panel 500. Compared with the traditional car body, the side wall structure of the car body is not provided with a metal exterior wall panel. Instead, the decorative panel 200 and the glass window 400 are directly bonded to the outside of the skeleton beam of the side wall structure, thereby reducing the weight of the car body and meeting the reliable support and structural strength requirements of the side wall. The car body has substantial advantages such as beautiful appearance, simple structure and more reliable structural strength, and can meet the lightweight requirements of rail vehicles and the flatness requirements of the installation surface of the car body's external contour.

[0104] It should be noted that in the vehicle body described in the embodiment of the present invention, the side wall structure includes at least the upper side rail 1 and the upper door crossbeam assembly as described above; further, the side wall structure also includes the door pillars 2, window pillars 3, end pillars 4, and lower window crossbeam 5 as described above. The specific connection structure of the various beams of the side wall structure is not further described.

[0105] It should be noted that if Figure 5 and Figure 13 As shown, the door pillar 2 is a large-cross-section square tube structure. The upper portion of the door pillar 2 has spot welding holes 51 on its inner side surface, where it is spot-welded to the upper side rail 1. The middle portion of the door pillar 2 also has spot welding holes 51 on its side surface, where a first reinforcement plate 7 and a backing plate 9 are pre-assembled and installed via spot welding. This reinforcement structure reliably reinforces the first connection and effectively controls welding deformation. Several keyholes are provided on the side of the door pillar 2 where it connects to the door mechanism, providing mounting interfaces for the door mechanism.

[0106] It should be noted that if Figure 10 and Figure 13 As shown, the window column 3 is a small-section square tube structure. A spot welding hole 51 is provided on the inner side surface of the upper portion of the window column 3 for spot welding to the upper side rail 1. The lower portion of the window column 3 is pre-assembled and assembled with a first reinforcement plate 7, a second reinforcement plate 8, and a backing plate 9 by spot welding. This reinforcement structure reliably reinforces the second connection and effectively controls welding deformation.

[0107] It should be noted that if Figure 11 and Figure 13As shown, the end column 4 is a B-beam structure, capable of forming a sliding connection with the B-shaped profile of the end wall 600 during installation. The specific connection structure will be described in detail later and will not be repeated here. The upper portion of the end column 4 is spot-welded to the upper side rail 1. The lower portion of the end column 4 is pre-assembled with a first reinforcement plate 7 and a backing plate 9, also pre-assembled by spot welding. This reinforcement structure reliably reinforces the third connection and effectively controls welding deformation.

[0108] It should be noted that if Figure 12 and Figure 13 As shown, one end of the window lower beam 5 is connected to the door pillar 2, and the other end of the window lower beam 5 is connected to the end pillar 4. The middle of the window lower beam 5 is connected to the window pillar 3. The lower surface of the window lower beam 5 is provided with a plurality of sliding grooves 10 to provide an interface for the installation of the equipment compartment and the skirt panel 500.

[0109] It should be noted that the roof rail 1 is preferably a special-shaped structure. The top connecting end 11 of the roof rail 1 is formed into a B-beam as described above, and can form a sliding connection with the B-beam profile of the roof 100 during the installation phase to facilitate assembly. The specific connection structure is described in detail in the subsequent content and will not be repeated here. The bottom connecting end 12 of the roof rail 1 is L-shaped, providing an interface for the installation of the window 400.

[0110] In some embodiments, as Figure 15 、 Figure 16 、 Figure 17 and Figure 18 As shown, the top of the window 400 is bonded to the outer surface of the roof rail 1. The front and rear sides of the window 400, along the vehicle's length, are bonded to the outer surfaces of the door pillar 2 and the window pillar 3, respectively, or to the outer surfaces of the end pillar 4 and the window pillar 3, respectively. The bonding structure of the window 400 ensures that each window area of ​​the vehicle body is covered with the glass window 400. The window 400 is preferably bonded using a sealant 300, thereby achieving a sealed connection between the window 400 and the side wall structure.

[0111] In some embodiments, as Figure 19 As shown, the bottom of the window 400 is bonded to the outer surface of the window lower crossbeam 5. Preferably, the bottom of the window 400 is bonded to the outer surface of the window lower crossbeam 5 by at least two sets of spaced-apart sealants 300, thereby achieving a sealed connection between the bottom of the window 400 and the window lower crossbeam 5.

[0112] It should be noted that the windows 400 described in the embodiments of the present invention are all made of glass. The decorative panels 200 are all composite panels with a lower material density. This vehicle body utilizes the decorative panels 200 and windows 400 to replace the metal exterior panels on the traditional vehicle body surface, achieving reliable weight reduction.

[0113] In some embodiments, as Figure 18As shown, the roof 100 comprises an outer panel 110 and an inner connecting beam 120. The outer panel 110 preferably has a rounded transition profile on one or two sides of the vehicle body to reduce wind resistance. The top and bottom of the inner connecting beam 120 are respectively fixed to the inner surface of the outer panel 110, providing reliable support and thickness for the outer panel 110, thereby reinforcing the roof 100. The inner connecting beam 120 preferably has at least one step to ensure reliable sliding assembly with the roof rail 1 during vehicle body assembly (installation).

[0114] In some specific embodiments, Figure 18 As shown, the roof rail 1 includes a first mounting portion, a second mounting portion, and a third mounting portion, which are integrally connected from top to bottom. The first mounting portion is a U-shaped beam structure that can be assembled with the step portion of the U-shaped beam structure through a sliding fit. The first mounting portion and the step portion are abutted at both ends, with a sliding gap in the middle, allowing for flexible adjustment of the relative height between the roof 100 and the roof rail 1 during vehicle body installation. The assembled first mounting portion and the step portion are secured by welding. The second mounting portion is integrally connected to the bottom of the first mounting portion. The outer surface of the second mounting portion is connected to a decorative panel 200, which is connected to the bottom of the outer shed 110. The top and bottom of the decorative panel 200 on the outside of the roof rail 1 are respectively bonded to the top and bottom of the second mounting portion using sealant 300. The decorative panel 200 is arranged side by side with the second mounting portion. The decorative panel 200 replaces the traditional metal exterior wall panel on the outside of the roof rail 1, providing protection, sealing, and aesthetic decoration for the roof rail 1. The third mounting portion is an L-shaped beam structure, integrally connected to the bottom of the second mounting portion. The top of the window 400 is bonded to the outer surface of the third mounting portion. The third mounting portion and the top of the window 400 are bonded together using sealant 300, thus providing a mounting interface for the window 400 using the L-shaped beam structure.

[0115] In some embodiments, the roof 100 also includes a rain eaves 130. The rain eaves 130 are integrally connected to the bottom of the outer shed 110 and to the top of the decorative panel 200. The rain eaves 130 form a hook-shaped structure toward the outside of the vehicle to guide rainwater. A decorative panel 200 is provided between the rain eaves 130 and the window 400, and the decorative panel 200 is applied to the outer surface of the upper side beam 1 by applying a sealant 300, which can ensure that the outer surface of the decorative panel 200 is in the same plane with the outer surface of the window 400 after installation, replacing the metal exterior wall panel of the traditional vehicle body, so that the flatness of the outer contour of the side wall meets the wind resistance requirements, meets the lightweight requirements, and can improve the structural strength.

[0116] In some embodiments, as Figure 15 As shown, the vehicle body further includes an end wall 600. The end wall 600 is configured with at least one connecting portion, and the connecting portions of the end wall 600 are preferably configured on both sides of the end wall 600 along the vehicle width direction. Figure 15What is shown is the connecting portion of the end wall 600 on one side. The end column 4 of the side wall structure is constructed with a fourth mounting portion. The connecting portion and the fourth mounting portion are both U-beam structures. The fourth mounting portion can be assembled with the connecting portion of the end wall 600 by sliding fit. The fourth mounting portion and the connecting portion of the end wall 600 are abutted at both ends and a sliding gap is left in the middle, so that the relative distance between the end wall 600 and the end column 4 can be flexibly adjusted during the vehicle body installation stage; the assembled fourth mounting portion and the connecting portion are fixed by welding. The outer surface of the fourth mounting portion is connected to the window body 400. Preferably, the side of the window body 400 is bonded to the outer surface of the fourth mounting portion by at least two sets of sealants 300 arranged at intervals, thereby realizing a sealed connection of the side of the window area.

[0117] It should be noted that in the vehicle body described in this embodiment of the present invention, the sliding connection between the sidewalls and the roof 100 allows for flexible adjustment of the height difference between the roof 100 and the sidewall structure during vehicle body assembly. The decorative panel 200, mounted on the outer surface of the roof rail 1, serves as a transitional structure between the roof 100 and the window 400. By adjusting the width of the glue seam between the decorative panel 200, the rain canopy 130, and the upper edge of the window 400, manufacturing errors can be eliminated and manufacturing precision improved.

[0118] In some embodiments, as Figure 20 As shown, the skirt panel 500 includes a skirt cover plate 520 and a hinge portion 510. The hinge portion 510 is configured as a U-shaped hook structure. Specifically, one end of the hinge portion 510 is connected to the top of the skirt cover plate 520 via a rotating shaft to realize the rotation of the skirt panel 500 around the rotating shaft, thereby realizing the lifting and closing of the skirt panel 500. The lower surface of the window lower crossbeam 5 of the side wall structure is connected to a slide groove 10, and an opening is provided at the bottom of the slide groove 10. The other end of the hinge portion 510 is provided with a horizontal extension section, and preferably, the horizontal extension section can be placed flat below the opening of the slide groove 10. The horizontal extension section is connected to the opening of the slide groove 10 by a connecting bolt 530. During the vehicle body installation stage, the skirt panel 500 can be quickly aligned with the slide groove 10 through the hinge portion 510, ensuring the efficient installation of the connecting bolt 530, and improving the installation accuracy and efficiency of the skirt panel 500.

[0119] The present invention further provides an urban virtual rail vehicle comprising the above-described side wall structure; or comprising the above-described vehicle body. The urban virtual rail vehicle, by at least providing the above-described side wall structure, has all the advantages of the above-described side wall structure, and the details are omitted here.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A side wall structure, characterized in that: include: An upper side rail is arranged along the vehicle length direction, and the lower portion of the upper side rail forms a door area and a plurality of window areas; The door upper crossbeam is fixed to the top of the door area and connected to the upper side beam; Among them, the upper cross beam of the door is fixedly connected to the upper side beam and forms a U-shaped cavity structure. The upper cross beam of the door includes a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam; the U-shaped cavity structure can reinforce the thickness of the upper side beam in the vehicle width direction.

2. The side wall structure according to claim 1, characterized in that: The door upper crossbeam comprises: A main beam body is fixedly connected to the inner surface of the upper side beam, and the top and bottom of the main beam body are respectively fixedly connected to the inner surface of the upper side beam, so that the main beam body and the upper side beam enclose the U-shaped cavity structure with a closed cross-section; A plurality of support frames are respectively connected to the main beam body and the inner surface of the upper side beam.

3. The side wall structure according to claim 2, characterized in that: The main beam body comprises: A first connecting end is provided at the top of the main beam body, the first connecting end is bent toward the upper side beam to form a B-beam structure, and the top connecting end of the upper side beam is bent toward the main beam body to form a B-beam structure, and the bent end surface of the first connecting end abuts against and is fixedly connected to the bent end surface of the top connecting end of the upper side beam; The second connecting end is arranged at the bottom of the main beam body, the second connecting end is bent toward the upper side beam and forms a C-beam structure, and the end surface of the bent first connecting end abuts against and is fixedly connected to the inner surface of the bottom connecting end of the upper side beam.

4. The side wall structure according to claim 2, characterized in that: The door upper crossbeam also comprises: A plurality of fixing holes are constructed on the surface of the main beam; A plurality of stoppers are respectively fixed on the surface of the main beam body facing the upper side beam, and each of the stoppers is fixed beside each of the fixing holes in a one-to-one correspondence; A plurality of rivet nuts are respectively fixed on the surface of the main beam body facing the upper side beam.

5. The side wall structure according to claim 4, characterized in that: The plurality of support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged at intervals and fixed to the surface of the main beam body facing the upper side beam, and the first support frame and the second support frame are respectively arranged along the vehicle height direction; The first support frame and the second support frame are respectively bent into a U-shape, and the bending directions of the first support frame and the second support frame are opposite; Wherein, the fixing hole and the stopping portion are provided between each first supporting frame and the previous second supporting frame; Wherein, the rivet nut is provided between each first support frame and the next second support frame.

6. The side wall structure according to any one of claims 1 to 5, characterized in that: The side wall structure also includes: a pair of door posts, respectively provided on both sides of the door area; A pair of end columns are respectively provided at both ends of the vehicle body; a plurality of window columns, respectively arranged between the door columns and the end columns; A pair of window lower cross beams are arranged below the upper side beams along the vehicle length direction, and each end pillar is connected to the door pillar on the corresponding side through the window lower cross beams; Wherein, all the door pillars, window pillars and end pillars are arranged along the vehicle height direction; The tops of all the door posts, window posts and end posts are connected to the upper side beams, and the bottoms of all the window posts are connected to the window lower cross beams on the corresponding sides; Wherein, a reinforcement structure is installed at the connection between at least one of the door column, the window column and the end column and the window lower crossbeam.

7. The side wall structure according to claim 6, characterized in that: The position where the door pillar and the end of the window lower crossbeam on the corresponding side are connected is the first connection point; The reinforcement structure includes a first reinforcement plate and a backing plate; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixed to the outer surface of the first connection; The backing plate connects the side surface of the door pillar and the end surface of the window lower beam.

8. The side wall structure according to claim 6, characterized in that: The position where the end of the window pillar is connected to the window lower beam is the second connection point, and the reinforcement structure includes a first reinforcement plate, a second reinforcement plate and a pad; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixed to the inner surface of the second connection; The second reinforcing plate is a T-shaped plate, and the second reinforcing plate is fixed to the outer surface of the second connection; The backing plate connects the end surface of the window column and the upper surface of the window lower beam.

9. The side wall structure according to claim 6, characterized in that: The position where the end column is connected to the end of the window lower crossbeam on the corresponding side is the third connection point; The reinforcement structure includes a first reinforcement plate and a backing plate; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixed to the outer surface of the third connection; The pad connects the side surface of the end column and the end surface of the window lower beam.

10. The side wall structure according to claim 6, characterized in that: The side wall structure further comprises a plurality of slide grooves, which are suitable for installing skirt boards. The slide grooves are arranged at intervals and fixed to the lower surface of the window lower beam.

11. A vehicle body, characterized in that: include: The side wall structure according to any one of claims 1 to 10, wherein the door area of ​​the side wall structure is equipped with a vehicle door, and all window areas of the side wall structure are equipped with windows; a roof connected to the top of the side wall structure; A plurality of decorative panels, respectively covering and connected to the upper side beams of the side wall structure, the tops of the doors and the tops of all the windows are provided with the decorative panels; A plurality of skirt panels respectively cover and are connected to the bottom of each of the windows.

12. The vehicle body according to claim 11, characterized in that The top of the window is bonded to the outer surface of the upper side beam, and the bottom of the window is bonded to the outer surface of the lower cross beam of the window; The two side edges of the window body are respectively bonded to the outer surface of the door column and the outer surface of the window column, or respectively bonded to the outer surface of the end column and the outer surface of the window column.

13. The vehicle body according to claim 12, characterized in that The roof includes an outer roof plate and an inner connecting beam, wherein the top and bottom of the inner connecting beam are respectively fixed to the inner surface of the outer roof plate, and the inner connecting beam is configured with at least one step portion; the upper side beam includes: The first mounting portion is a U-beam structure and can be assembled with the step portion by sliding fit. The assembled first mounting portion and the step portion are fixed by welding. a second mounting portion integrally connected to the bottom of the first mounting portion, the outer surface of the second mounting portion being connected to the decorative plate, and the decorative plate being connected to the bottom of the outer shelf; The third mounting portion is an L-shaped beam structure. The third mounting portion is integrally connected to the bottom of the second mounting portion, and the top of the window body is adhered to the outer surface of the third mounting portion.

14. The vehicle body according to claim 12, wherein: The vehicle body also includes an end wall, which is constructed with at least one connecting portion, and the end column is constructed with a fourth mounting portion. Both the connecting portion and the fourth mounting portion are U-beam structures. The fourth mounting portion can be assembled with the connecting portion of the end wall through sliding fit. The assembled fourth mounting portion is fixed to the connecting portion by welding; the outer surface of the fourth mounting portion is connected to the window body.

15. The vehicle body according to claim 11, wherein: The skirt board includes a skirt cover board and a hinge portion, the hinge portion is configured to be a U-shaped hook, one end of the hinge portion is connected to the top end of the skirt cover board through a rotating shaft, and the other end of the hinge portion is provided with a horizontal extension section, and the lower surface of the window lower crossbeam of the side wall structure is connected with a slide groove, the bottom of the slide groove is provided with an opening, and the horizontal extension section is connected to the opening of the slide groove through a connecting bolt.

16. A rail vehicle, characterized in that: It comprises the side wall structure according to any one of claims 1-10; or it comprises the vehicle body according to any one of claims 11-15.

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